I think one of the main items you have to consider is an El Camino is a poor choice tor a drag car because of the weight distribution and to make any engine work will require a suspension rework that will completely ruin any streetability. 450 HP is attainable from a 292 but what would you have him do? Pull the engine and dyno it, chassis dyno?? It runs and goes like stink and can be driven to the store or cross country, nuff said.